Whether you regularly pack a protein shake in your gym bag or just chug the occasional isotonic sports drink, chances are you've used supplements at one time or another. Trouble is, the whole process can get a bit confusing - with every supplier claiming that its brand is better filtered, or more efficient, or will pack on more muscle - to the point where you feel like you need a degree in chemistry to understand what you're putting into your body.

Here's the good news: MF is on hand to help. The science might be baffling, but we've put together a panel of medical professionals, registered dieticians and fitness experts to explain the latest developments in supplement science: what you need, when you need it, why you need it, and what - if any - are the potential pitfalls. You'll find information about each of our experts in the black box on the right.

From reading the below guides to each of the most common supplements, it's possible you'll find something that'll send your training gains through the roof - or you discover you've been using the wrong products. Either way, you'll know a damn sight more than most people do about the performance-altering chemicals they're putting into their body.

Protein
Creatine
Amino acids
Antioxidants
Fat burners
Lesser known supplements
Supplement FAQs